KYLIN SPORT Latex Fabric Covered Resistance Bands Fitness Exercise Workout Tubes for Yoga Pilates Crossfit Gym Red : 10 pounds; Blue: 20 pounds ; Green : 30 pounds SAFETY - Nylon Sleeve protects user from injury if tubing breaks or snaps back DURABILITY - Sleeve protects tubing from damage, body oils, UV rays & over stretching. Made of Eco-friendly natural latex for maximum strength. Each band comes with soft Grip Handles COST EFFECTIVE - Covered tubing can last 10 times or longer than regular tube which saves you money.